Can DD SST90 p60 module handle 4p 18650?

Heya-
not sure how much resistance the host will have but do you guys think
1s4p is a bad idea with a DDSST90?

It would be used in a custom p60 headlamp host that's fairly chunky with fins etc and remote cells.

Not sure if it would draw too many amps off 4 regular (non IMR) 18650.


Also wondering if one can short a 2mode driver to do LOW&DD instead of LOW&HI

Any thoughts/advice would be appreciated!

Gotcha- I was thinking direct drive tho

the internal resistance of the battery of 4 cells will decrease drastically, won't it? Like putting 4 resistors in parallel? Plus, it all depends on your batteries. at 4.2V, the typical SST90 is basically a short that will conduct many more amps than it can handle, a visually extrapolated 20A, while at around 3.6V it would be only allowing ~6A to flow, with a perfect supply. http://www.luminus.com/products/datasheets/Luminus_SST-90-W_Datasheet.pdf I'm guessing the internal resistance of a cell might have something to do with why people can successfully DD the SSTs.

There is also the practice of putting cells in parallel to consider. If the discharge characteristics don't line up just right, you could have cell failure. Protected cells might help in this case as long as the current draw is below the protection circuit's maximum current rating, although I'm not entirely sure what functions of protection the circuits offer besides overcurrent and over/under voltage. Maybe someone more accustomed to protected cells can chime in here.

Now, once you know that your individual cells can't be "shorted" without protection kicking in, you can set the total maximum current using simple AMC7135 drivers paralleled.